plz guide me regarding some hd chanels recoding freezing

i m using vu+solo with 2.0.3 image , it is working perfect but i got stunned when i came to know that some hd chanels which run like a stream ,means zero freezing, when i record such channels and on playing such recordings recorded movie don't play properly rather it plays like frezing picture all the time and this problem occurs with some hd chanels e.g bbc hd (hotbird 13). hope i conveyed my problem clearly. plz help what is the solution
regards